| Prime Ministers of the UK | 0 | - | 4.95 | 439,711 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,704,843 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,656 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,599 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,742 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,144 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,821 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,592 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,836 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,485 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,347 |
| Countries of the Popes | 0 | - | 4.79 | 128,256 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,986 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,728 |
| 100 Biggest Soviet Cities in 1989 with a Map | 0 | - | 4.97 | 29,890 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,665 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,323 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,853 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,839 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,600 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,595 |
| Countries of the German Empire | 0 | - | 4.51 | 37,987 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,823 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,466 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,200 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,841 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,634 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,921 |
| Presidential Middle Names | 0 | - | 4.41 | 60,360 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,968 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,125 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,414 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,642 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,462 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,273 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,400 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,848 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,646 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,224 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,924 |
| Pope Facts | 0 | - | 4.39 | 31,274 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,085 |
| Flags of WW1 | 0 | - | 4.60 | 38,456 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,030 |
| The American Revolution | 0 | - | 4.52 | 54,271 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,354 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,484 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,147 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,138 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,932 |
| Vietnam War Countries | 0 | - | 4.82 | 94,310 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,694 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,007 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,712 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,641 |
| Arms Exports - United States | 0 | - | 4.77 | 62,478 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,919 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,550 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,403 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,270 |
| First Ladies of the United States | 0 | - | 4.28 | 85,704 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,236 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,198 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,226 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,988 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,970 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,847 |
| Every European Country Shape | 0 | - | 4.96 | 202,052 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,908 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,655 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,902 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,612 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 82,909 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,932 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,217 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,045 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,358 |
| Name that Greek Letter | 0 | - | 4.93 | 324,051 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,715 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,165 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,411 |
| UK Immigration by Country | 0 | - | 4.94 | 141,063 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,048 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,997 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,268 |
| Name the English Monarchs | 0 | - | 4.91 | 503,482 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,378 |
| National Founders | 0 | - | 4.40 | 83,863 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,659 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,660 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,208 |
| The George Washington Presidency | 0 | - | 4.03 | 14,553 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,740 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,659 |
| The John Adams Presidency | 0 | - | 4.12 | 8,753 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,941 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,747 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,331 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,699 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,138 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,864 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,120 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,466 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,254 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,539 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,099 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,391 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 319,061 |
| Random European Flag to Country | 0 | - | 4.89 | 182,780 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,098 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,554 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,975 |
| Flags of Countries That Border France | 0 | - | 4.88 | 123,310 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,420 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,487 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,522 |
| The Trojan War | 0 | - | 4.83 | 39,774 |
| Ancient Greek Words | 0 | - | 4.93 | 111,802 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,066 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,314 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,606 |
| Roman Emperors | 0 | - | 4.95 | 120,264 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,965 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,017 |
| Monty Python Quotes | 0 | - | 4.88 | 42,494 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 388,522 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,593 |
| Animals in British History | 0 | - | 4.43 | 26,029 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,767 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,871 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 861,080 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,841 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,966 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,246 |
| Biggest Axis-Controlled Cities | 0 | - | 4.44 | 48,912 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,514 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,096 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,823 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 629,089 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,523 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,206 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,727 |
| U.S. President Scramble | 0 | - | 4.40 | 116,868 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,206 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,930 |
| American Revolution Decoder | 0 | - | 4.10 | 20,964 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,297 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,185 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,028 |
| Most Forested European Countries | 0 | - | 4.80 | 75,416 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,644 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,405 |
| History of Russia Quiz | 0 | - | 4.47 | 31,943 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,113 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,208 |
| History of France | 0 | - | 4.59 | 57,192 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,816 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,319 |
| History of Italy | 0 | - | 4.55 | 32,031 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,096 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,231 |
| Byzantine History | 0 | - | 4.91 | 28,901 |
| Byzantine Emperors | 0 | - | 4.92 | 14,304 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,122 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,705 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,278 |
| Arthurian Legend | 0 | - | 4.33 | 25,127 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,920 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,127 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,394 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,237 |
| Name the James Bond Movies | 0 | - | 4.56 | 158,661 |
| James Bond Trivia | 0 | - | 4.46 | 39,298 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,382 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,601 |
| Geography of the British Empire | 0 | - | 4.48 | 39,726 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,182 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,796 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,318 |
| Communist Countries in History | 0 | - | 4.63 | 496,229 |
| Political Movements by Country | 0 | - | 4.46 | 72,592 |
| History of India | 0 | - | 4.62 | 21,445 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,489 |
| Countries of Africa | 0 | - | 5.00 | 2,541,986 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,491 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,393 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,004 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,464 |
| African East Coast | 0 | - | 4.96 | 96,185 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,048 |
| History of South Africa | 0 | - | 4.60 | 17,709 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,326 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,830 |
| Australian Capitals | 0 | - | 4.92 | 62,739 |
| Australia Map Quiz | 0 | - | 4.95 | 344,919 |
| Flags of North and South America | 0 | - | 4.99 | 373,843 |
| History of Mexico | 0 | - | 4.58 | 15,323 |
| South America Map Quiz | 0 | - | 5.00 | 1,550,979 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,024,881 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,971 |
